Who invented the steel plow?

The steel plow was invented by John Deere in 1837 in Grand Detour, Illinois, when he took a broken blade from a sawmill and used it as a plow to break up the soil. Because of the steel, the soil did not stick to the blade, and Deere was able to plow with new efficiency, leading to enhanced productivity.

Since this invention, the John Deere company has grown and now builds all sorts of equipment and machinery for farmers. As early as 1890, Deere's company had expanded to include wagons, buggies, drills, harrows, planters and cultivators in addition to the original steel plows.